2015-yilning variantlari Matematika (Informatika) javoblari bilan

VARIANT № 120
1. Natural a sonni b ga bo'lganda bo'linma с ga va qoldiq d ga bo’ldi. Agar bo’linuvchi va bo'linma ikki marta ortsa, qoldiq qanday o'zgaradi?
A) 2 marat kamayadi B ) 2 marta ortadi C ) 4 marta ortadi D) o’zgarmaydi
2. Teng yonli trapetsiyaning diognallari o'zaro perpndikulyar hamda yuzi 32 ga teng bo’lsa, uning diognali uzunligini toping.
A) 4√2 B) 4 C) 8 D) 6
3. ildizlari o'rta arifmetigini toping.
A) 1,5 B) 19/18 C) 13/12 D) 0,(6)
4 . Agar bo’lsa toping.
A) B) C) D)
5. (24-(-3)):((+6)-(-3)) ni hisoblang.
A)-7 B) 3 C) 7 D) -3
6 . soddalashtiring x>0
7 va ko’phadlar aynan teng bo’lsa, a va b
larni toping.
A) a=2; b= 4 B ) a=-2; b=4 C)a= -2; b= -4 D) a=-2; b=-4
8 Radiuslari r=l va R=3 sm bo’lgan aylanalar tashqi ravishda urinadi. Aylanalar urinish nuqtasidan ularning umumiy urinmalarigacha bo'lgan masofani (sm) toping.
A) 3/2 B) 2/3 C) 4/5 D) 5/6
9 Ikkita qo’shni yoqlarning markazlari orasidagi masofa √8 ga teng bo’lgan kubga tashqi chizilgan shar sirtining yuzini toping
A ) 144π B ) 120π C)108π D) 125π
10. Radiusi r bo’lgan aylananing parallel vatarlari uning radiusining 1,2 qismiga teng. vatarlar orasidagi masofani toping.
A)(7/5)r B)r C) (6/5) r D) (8/5)r
11. Teng yonli uchburchakning perimetri 52 sm. Agar uning asosi yon tomonining 0,6 qismini tashkil qilsa, unga tashqi chizilgan doira yuzini (sm²) toping.
A) B) C) D)
12. hosilasini hisoblang.
A) 8x⁷ + 3sin3x B) C) 8x⁷ -3sin3x D)
13.1 ko’paytmaning natural bo’luvchilari sonni toping.
A) 106 B)108 C) 216 D) 54
14. tenglamaning ildizlaridan biri -1 ga teng. a ni toping
A) 0 B)-4 C) 2 D ) 4
15. Agar x_n ketma-ketlik uchun x_n=x_n-1-x_n-2, n≥3 x₂=2, x₁= 2 bo’lsa, x₅ ni toping,
A ) -2 B ) 2 C )5 D)-5
16. x ning qanday qiymatlarida |44 + 2x² -26x| = (-26x-44-2x²) o'rinli bo’ladi?
A) (2;11) B) (-∞;2] va [11; ∞) C) (-∞;-2) v a ( 11; ∞) D) (-2;0) va (0;11)
17.
A) B) C) D)
18. 2(x-2)²+2(1-1,5x)=1 tenglama ildizlari yigindisining 2/11 qismini toping.
A ) 1/11 B ) 2 C)11 D) 1
19. vektor berilgan. a vektorning uzunligi 5 ga teng bo’lsa, ni toping.
A ) ± 1/2 B) 1 C) 2 D) -1
20. Balandligi 4 sm . asosi 16 sm bo’lgan teng yonli uchburchakka tashqi chizilgan aylana radiusini toping.
A) 10 B ) 8 C )9 D) 11
21. tenglamaning barcha ildizlari yig’indisini toping.
A) 2√3 B)1 C)√3 B ) 0
Agar bo’lsa, S qaysi oraliqqa tegishli?
A)(6;7) B) C) D)
23. ni hisoblang
A) 6 B) 8 C) 12 D) 4
24. ctg55°ctg45°tg35° ni hisoblang.
A) 0 B ) 0,5 C)1 D) 2
25. tenglamaning ildizlar yig’indisini toping.
A) 2 B ) 3 C) D)
26. tenglamani yeching.
A) ∅ B) 3 C) 1 D ) √2 - 1
2 7. Rasmada ifodalanganidek OD va CE kesmalar AB diametrgi perpendikulyar bo’lib, AO=2CE bo’lsa, S_ACB :S_ADB nisbatini toping.

A ) 1:4 B ) 1:2 C) 3:2 D) 2:1

28. tenglamaning yechimlari to'plamini toping.
A){5;-3} B) {5; 10} C) {5} D) {3;10}
29. funksiyaning aniqlanish sohasini toping
A ) B) C) D)
30.Hisoblang:
A) -1 B ) -√2 C)1 D) √2
31. 16 bit necha baytga teng?
A) 20 B) 0,02 C)2 D) 0,2
32. MS Excel 2003 dasturida berilgan =Если(Степен(3:4)>81; Сцепить(“ avto” :’'bus” ); MAKS (15;30;4)) formulani natijasini aniqlang.
A) 81 B)AVTOBUS С)30 D) avtobus
33. Kompyuterga dasturiy ta’minotini o’rnatish jarayoni... deyiladi.
A ) arxivlash B) defragmentatsiya C) installyatsiya D) deinstallyatsiya
34. MS Excel 2003 dasturida A1 katakda 8, A2 katakda 7, A3 katakda 6 qiymati berilgan bo’lsa, =MИH(A1:A3) formula bo’yicha A4 katakda qanday natija hosil bo’ladi?
A) 5 B ) 7 С)8 D)6
35. Fayllarning diskdagi bo’laklarini bir joyga to’plash ... deb ataladi.
A) formatlash B ) defragmentatsiya C) nazorat D) fayllarni tiklash
36. Paskal tilida quyidagi dastur bajarilishi natijasida ekranga chiqariladigan axborotlarni aniqlang:
Var k, b:integer; c:string;
Begin K:=4; B:=5; C:=” 21” ; If k>b then write
(“ C=” ,C:1) else write ( “ C=” ,C:1); end.
A) C=2121 B ) C=212 C)C=2 D)C1